Myosin are motor proteins that drive forces and movement on actin filaments.

Q: Light less dense area of sarcomere that contains reminder of thin filaments but no thick filaments…

A: SARCOMERE It is the complicated unit of striated muscle tissue. It is the repeating unit between two…

Q: Match each protein with the appropraite myofilament

A: The sliding filament model, developed by Hugh Huxley and Jean Hanson and Andrew Huxley and Ralph…

Q: Which of the following is NOT true regarding actin? O It contains troponin and tropomyosin O It is a…

A: Among the given options, option (d) is the most appropriate. All the mentioned statements are true…

Q: True or False? Rigor mortis is characterized by continued attachment of myosin heads to actin…

A: Even after death, in absence of oxygen the body may continue to produce ATP via anaerobic…

Q: Actin is sometimes called the "thick" filament. It splits ATP and is responsible for the "power…

A: The movements of different body parts are attributed to the systemic contraction and relaxation of…

Q: Actin filaments in microvilli require the help of myosin so that they can associate with the…

A: The cytoskeleton is defined as a complex, dynamic network of interconnecting protein filaments which…

Q: Identify the structure highlighted in green: 三三園 Sarcolemma Myofibril Sarcoplasm

A: The image given is of  excitation-contraction coupling mechanism in skeletal muscle.

Q: The flushed appearance of skin is due to the hemoglobin in blood. True False

A: Tissue is a part of structural organization of the body which is formed of various cell . Tissue is…

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

Q: Myofibis in muscle fibres are made up of repeating units of dark and light bonds called

A: Myofibril is a muscle cell that is shaped like a rod. Many chains of Myofibril bound together to…

Q: Why are calcium ions so important for the muscle contraction process

A: Muscle contraction is a process carried out by the interaction of the actin and myosin proteins. It…

Q: What is the difference between a myofilament and a myofibril?

A: The muscle is a soft tissue that is highly specialized in creating stress, resulting in strength…

Q: Please describe when the myosin heads grab and pull on the active sites in the actin fibers

A: Muscle cells are specific for contraction. It allows for motions and facilitates bodily processes…

Q: List five proteins of the myofilaments and describe their physical arrangement.

A: The myofilaments are the proteins that make up the contractile elements of muscle cells. There are…

Q: Sarcomeres that are very long at rest generate low amounts of tension because there is very little…

A: Sarcomere is defined a complex striated tissues that acts as the basic contractile unit of the…

Q: true or fasle :  Eccentric muscle contractions at a constant velocity are be considered isokinetic.…

A: Concentric refers to a muscle that shortens under tension. Eccentric refers to a muscle that…

Q: Compare and contrast myofibrils and myofilaments.

A: Muscles are required in breathing, talking, running, walking, and anybody movement. Actin and…

Q: Describe the structures and functions of actin-based motor proteins, myosins.

A: Motor proteins are a class of proteins that are capable of converting chemical energy (usually from…

Q: When a(n) __________ moves along the sarcolemma, the membrane potential changes along the membrane…

A: The sarcolemma is the cell membrane of the muscle cells. When a muscle is stimulated by a neuron at…

Q: Each of the pairs of phrases below describe steps during skeletal muscie contraction. The 2nd phrase…

A: Muscle tissue is a type of tissue which contain actin , Troponin and myosin proteins so as to allow…

Q: Which statement or statements describe why depletion of ATP after death leads to rigor mortis?

A: Rigor mortis is the third phase of death. It is one of the unmistakable indications of death,…

Q: Myosin II action differs from that of kinesin in that one of the kinesin heads is always in contact…

A: Introduction Motor motion, including as contractions and expansions, is controlled by myosin. Muscle…

Q: Which of the following statements is true?     Fast glycolytic fibers have a small diameter.…

A: Fast glycolytic Fibers:  Fast glycolytic fibers, also known as type IIb fibers, are a type of muscle…

Q: Thick myofilaments contain which of the following? (Select all that apply) troponin actin myosin…

A: Myofilaments are key regulators of the contraction in cardiac and skeletal muscles. The thick-thin…

Q: myofibril is only found in straight muscles. True or false

A: Muscles are specialized tissues that are responsible for producing force and movement in the body.…

Q: In the absence of _____, a contracted skeletal muscle will not relax but will develop rigor mortis…

A: Introduction After the death of an individual, several changes take place inside the dead body. The…

Q: The binding of myostatin to its corresponding receptor on the plasma membrane of cells leads to…

A: The body is made up of large amount of muscles. These muscles are responsible for generating heat…

Q: Describe the structure of myosin molecules and how theycombine to form a myosin myofilament

A: The myofibrils are comprised of actin (thin filament) and myosin (thick filament). Muscle…

Q: Embryonic myoblasts fuse to form single muscle fibers during development; thus skeletal muscle cells…

A: Embryonic stem cell is a pluripotent cell which has the ability to differentiate to all other cell…

Q: Thick and thin myofilaments have different properties. For each phrase below, indicate whether the…

A: Myofilaments are the parallel striated muscle cells or muscle fibres that constitute the fasicles…

Q: Which of the following is the plasma membrane of the myofiber?

A: The muscle fibers are multi-nucleated (exclusively in the case of skeletal muscle fibers),…

Q: List five proteins of the myofilaments

A: Muscle cell  The cell membrane of the muscle fiber/cell is known as sarcolemma. Muscle fibers are…

Q: Skeletal muscle fibers regularly divide by mitosis. True False

A: Muscle tissues are are the types of tissue which have proficiency to extend  , relax , possess…

Q: Tropmyosin and Troponin are called the regulatory proteins in muscle contraction. Describe the…

A: Each of the muscle fibers are made up of even smaller fibers called as myofibrils. These myofibrils…

Q: Experimenters can separate F-actin thin myofilaments frommyosin thick myofilaments. First they…

A: Muscle tissues can change their length in response to the stimulus.

Q: List five proteins of the myofilaments and describe theirphysical arrangement.

A: Muscles are the soft tissue found in our body. Muscles work to create strength and movement. They…

Q: Why does continuouns calcium release within a muscle fiber cause greater tension? Acticates more…

A: Muscle is a soft tissue like structure which is primarily responsible for the movement in the body.…

Q: What step DIRECTLY causes a sarcomere to shorten? cross- bridge formation  calcium transport into…

A: A sarcomere is the unit of muscle fiber responsible for contraction. Each sarcomere is composed of…

Q: Letter C is labeling А Tendon

A: Muscle are basically a soft tissue which have property of undergo contractions with action potential…

Q: Indicate whether the sentence is True or False During the cross-bridge cycle, ATP binding to myosin…

A: Repeated relaxation and contractions in Skeletal muscles are responsible for the movement and…

Q: Ca2+ does not play a role in muscle relaxation true or false

A: The muscle contraction occurs due to the introduction between active and Mauritius in filaments in…

Q: During the cross bridge cycle, what is the first event that occurs after ATP binds myosin? the power…

A: Introduction : ATPs are high-energy molecules that store the majority of the chemical energy in the…

Q: Weight training increases muscle fiber size by increasing the number of myofibrils. Explain

A: Muscles are the organs of the body’s muscular system and there are three distinct types of muscles…

Q: Activation of the myosin head is required for contraction and uses one ATP per cross-bridge cycle.…

A: Each of the muscle fibers are made up of even smaller fibers called as myofibrils. These myofibrils…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.